Dear all,
On behalf of all co-authors, I am pleased to inform you on the publication of
an article describing a new species of platanistoid from the early Miocene of
Patagonia (Argentina).
Viglino, M., M.R. Buono, C. Gutstein, M.A. Cozzuol & J.I. Cuitiño. 2018. A new
dolphin from the early Miocene of Patagonia (Argentina): insights into the
evolution of Platanistoidea in the Southern Hemisphere. DOI:
10.4202/app.00441.2017
AbstractThe contents of the superfamily Platanistoidea, an early-diverging
lineage comprising extinct species and a single extant representative of South
Asian river dolphin (Platanista gangetica), remain controversial. We describe
here a partial skull and associated tympano-periotic bones identified as a new
genus and species, Aondelphis talen gen. et sp. nov., collected in the lower
levels of the Gaiman Formation (early Miocene), in Patagonia (Chubut Province,
Argentina). Aondelphis is the first Patagonian platanistoid species named in
almost a century. Phylogenetic analyses suggest Aondelphis talen gen. et sp.
nov. and a taxon from New Zealand (cf. Papahu ZMT-73) are basal Platanistoidea
sensu lato. Unambiguous synapomorphies related to the ear bones allowed us to
determine its phylogenetic position. Aondelphis talen markedly differs from the
other well-known early Miocene Patagonian platanistoid Notocetus, suggesting
the coexistence of at least two different morphotypes that may have occupied
different ecological niches at that time. The putative close relationship with
a species from New Zealand indicates there was a rapid diversification and
widespread distribution of the group in the Southern Hemisphere during the
early Miocene. The description of new species and revision of historical
records of Patagonian platanistoids can help shedding light on cetacean
assemblages of the Patagonian sea during this epoch.
You can access the paper following this link:
http://app.pan.pl/article/item/app004412017.html
Otherwise, feel free to contact me at [email protected]
Sincerely,
Mariana
Lic. Mariana Viglino
Instituto Patagónico de Geología y Paleontología
CCT CONICET-CENPAT
Boulevard Brown 2915 - U9120ACD
Puerto Madryn - Chubut
Argentina
Tel: (+54) 0280-4883184 - Int: 1347
Fax: (+54) 0280-4883543
[email protected]
[email protected]
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